netdev - Re: [PATCH net-next] net: disallow drivers with buggy VLAN accel to register

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Date:	Tue, 29 Jan 2013 22:56:57 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	vyasevic@...hat.com
Cc:	mirq-linux@...e.qmqm.pl, netdev@...r.kernel.org, kaber@...sh.net,
	shemminger@...tta.com
Subject: Re: [PATCH net-next] net: disallow drivers with buggy VLAN accel
 to register_netdevice()

From: Vlad Yasevich <vyasevic@...hat.com>
Date: Tue, 29 Jan 2013 20:17:45 -0500

> On 01/29/2013 08:14 PM, Micha┅ Miros┅aw wrote:
>> Instead of jumping aroung bugs that are easily fixed just don't let
>> them in:
>> affected drivers should be either fixed or have NETIF_F_HW_VLAN_FILTER
>> removed from advertised features.
>>
>> Quick grep in drivers/net shows two drivers that have
>> NETIF_F_HW_VLAN_FILTER
>> but not ndo_vlan_rx_add/kill_vid(), but those are false-positives
>> (features
>> are commented out).
>>
>> OTOH two drivers have ndo_vlan_rx_add/kill_vid() implemented but don't
>> advertise NETIF_F_HW_VLAN_FILTER. Those are:
> 
> I am a bit hesitant to completely disable drivers, but I guess it
> would force people to fix their drivers if this is applied.

I think an improperly implemented driver should be BUG trapped as soon
as possible.

I've applied this patch, thanks.
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